Mobile Identity & Recycled Numbers
Secure online access, protect PII and prevent account takeovers caused by mobile number recycling.
ELIMINATE THE RECYCLED NUMBER RISK
Mobile numbers are increasingly the default identity credential, so strong authentication is vital. But most companies still use legacy approaches, such as SMS OTP, which fail to detect recycled numbers and are vulnerable to fraud.
Because Mobile Network Operators (MNOs) routinely recycle numbers (meaning the same number is mapped to a different SIM and issued to a new user) it is important that you verify the SIM card as well as the mobile number. Otherwise you risk giving the new owner of the mobile number access to all the previous owner’s PII and account information!
IDlayr detects and mitigates recycled number risk in real time, helping you prevent account takeover, data leaks, and fraud caused by reassigned numbers. By validating both the mobile number and the SIM, IDlayr ensures the right user is always in control – and you are protected from PII loss and account takeover.
Why It Matters
Legacy authentication methods fail to detect recycled numbers and the consequences can be severe.
- Avoid account takeover due to recycled numbers
Reassigned mobile numbers can give a new user unintended access to someone else’s accounts, data, and digital identity.
- Eliminate false trust in SMS OTPs
SMS OTP systems assume the number still belongs to the original user. That assumption breaks down when MNOs reissue numbers, creating a silent but critical vulnerability.
- Link number to SIM for real-time protection
IDlayr verifies both the mobile number and the SIM mapping, ensuring you detect recycled numbers and trigger re-verification if needed.
How it works
Recycled number detection works behind the scenes, using real-time data from mobile networks to assess SIM and number continuity:
- A user attempts to log in or perform a sensitive action.
- IDlayr authenticates the mobile number and checks the mobile number to SIM card mapping.
- If the SIM has changed or does not match the established user profile, IDlayr will flag the session so you can perform a step-up authentication.
- The user is protected, and so is your platform, with no disruption unless risk is detected.
Where It’s Used
- Banking
Prevent unintended access to financial accounts when a mobile number is recycled and reassigned to a new user.
- Healthcare
Protect access to sensitive health data, medical records, or personal information tied to mobile-based login systems.
- eCommerce
Stop accidental takeovers of accounts when users change or abandon numbers, without impacting user experience.
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